You can now keep your family safe at all times because it's their safety that should be our topmost priority!

This Door Stopper Alarm is a great solution to either help our family safe at all times. This can be used in a bedroom, dorm, hotel room, offices, stores, restaurants or apartment. It has a non-skid pad to prevent the door from opening plus it is so easy to install in just seconds – simply slide it under and you're done!
Features
DUAL FUNCTION - When the door stop alarm is in the "on" state, it can panic the intruders while the alarm is loud. When it is in the "off" state, it acts as a common door stopper, its high damping rubber prevents the door from sliding and keeps the door in the open position.
3 SENSITIVITY LEVELS - it has High-medium Low Sensitivities, with an adjustable sensitivity switch on the side that can be easily changed the mode. Smooth floors can try to use H-type sensitivity, vibration-sensing alarm.
EXTREME LOUD ALARM - When the baffle is stressed it will trigger a loud and harsh 120db alarm, which is enough to easily remind or wake up the homeowner, scare off intruders and possibly notify neighbours.
LIGHTWEIGHT & EASY TO CARRY - Each door alarm weighs 100g, the size is only half the size of a palm. It is convenient to carry and is very suitable for travel, apartment, home, etc., to protect you when traveling or working alone. A protector who really must be around you.
EASY TO USE - No wiring needed, just put 1x9V battery (Note: not include) in , place it under the door the gap between the bottom of the door and the floor should be 10mm(0.38 in) to 35mm(1.35 in)and switch the button on the back to “ON” then it can works.
Specifications:
Color: Silver and black (as shown in the pictures)
Material: Stainless steel cover
Working modes: Vibration sensor
Volumn of the alarm: 120 dB
Three sensitivity: High, Medium, Low
Battery: 1*9V battery (Not included)
Size: 136*45*36mm
Net weight: 94g